Scotogenic dark matter from gauged $B-L$

Yadir Garnica; América Morales; Carlos A. Vaquera-Araujo

doi:10.1016/j.physletb.2025.139790

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arXiv · 2411.13756

Scotogenic dark matter from gauged $B-L$

Yadir Garnica·América Morales·Carlos A. Vaquera-Araujo

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Abstract

We propose a $U(1)_{B-L}$ gauge extension to the SM, in which the dark sector is stabilized through a matter parity symmetry preserved after spontaneous symmetry breaking. The fermion spectrum includes three neutral right-handed fields with $B-L$ charges $(-4,-4, 5)$, that make the model free of gauge anomalies. Two of these neutral fermion fields serve as mediators in a scotogenic mechanism for light-active Majorana neutrino masses. The corresponding neutrino mass matrix has rank 2, predicting a massless state and a lower bound for neutrinoless double beta decay. Regions in the parameter space consistent with dark matter relic abundance are accomplished by the lightest neutral mediator.

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Yadir Garnica, América Morales, Carlos A. Vaquera-Araujo. 2024-11-20. Scotogenic dark matter from gauged $B-L$. https://doi.org/10.1016/j.physletb.2025.139790

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